Academic literature on the topic 'Superdirective array'

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Journal articles on the topic "Superdirective array"

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Altshuler, E. E., T. H. O'Donnell, A. D. Yaghjian, and S. R. Best. "A monopole superdirective array." IEEE Transactions on Antennas and Propagation 53, no. 8 (2005): 2653–61. http://dx.doi.org/10.1109/tap.2005.851810.

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Nakamura, Takashi, Shin-Ichi Miyagawa, and Senji Yckokawa. "Superdirective cascaded dipole array." Electronics and Communications in Japan (Part I: Communications) 75, no. 11 (1992): 80–88. http://dx.doi.org/10.1002/ecja.4410751108.

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Lonsky, Tomas, Jan Kracek, and Pavel Hazdra. "Superdirective Linear Dipole Array Optimization." IEEE Antennas and Wireless Propagation Letters 19, no. 6 (2020): 902–6. http://dx.doi.org/10.1109/lawp.2020.2981533.

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Buell, Kevin, Hossein Mosallaei, and Kamal Sarabandi. "Metamaterial Insulator Enabled Superdirective Array." IEEE Transactions on Antennas and Propagation 55, no. 4 (2007): 1074–85. http://dx.doi.org/10.1109/tap.2007.893373.

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Haskou, Abdullah, Ala Sharaiha, and Sylvain Collardey. "Compact Antenna Array of Superdirective Elements." IEEE Antennas and Wireless Propagation Letters 15 (2016): 1386–89. http://dx.doi.org/10.1109/lawp.2015.2510382.

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Best, S. R., E. E. Altshuler, A. D. Yaghjian, J. M. McGinthy, and T. H. O'Donnell. "An Impedance-Matched 2-Element Superdirective Array." IEEE Antennas and Wireless Propagation Letters 7 (2008): 302–5. http://dx.doi.org/10.1109/lawp.2008.921372.

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Simón Gálvez, Marcos F., Stephen J. Elliott, and Jordan Cheer. "A superdirective array of phase shift sources." Journal of the Acoustical Society of America 132, no. 2 (2012): 746–56. http://dx.doi.org/10.1121/1.4733556.

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Andrasic, G., and J. R. James. "Height reduced superdirective array with helical directors." Electronics Letters 29, no. 23 (1993): 2002. http://dx.doi.org/10.1049/el:19931335.

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Bokhari, S. A., H. K. Smith, J. R. Mosig, J. F. Zürcher, and F. E. Gardiol. "Superdirective antenna array of printed parasitic elements." Electronics Letters 28, no. 14 (1992): 1332. http://dx.doi.org/10.1049/el:19920846.

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Greco, Danilo, and Andrea Trucco. "Superdirective Robust Algorithms’ Comparison for Linear Arrays." Acoustics 2, no. 3 (2020): 707–18. http://dx.doi.org/10.3390/acoustics2030038.

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Frequency-invariant beam patterns are often required by systems using an array of sensors to process broadband signals. In some experimental conditions (small devices for underwater acoustic communication), the array spatial aperture is shorter than the involved wavelengths. In these conditions, superdirective beamforming is essential for an efficient system. We present a comparison between two methods that deal with a data-independent beamformer based on a filter-and-sum structure. Both methods (the first one numerical, the second one analytic) formulate a mathematical convex minimization pro
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Dissertations / Theses on the topic "Superdirective array"

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Baktir, Yasemin. "Investigation Of Superdirective Antenna Arrays." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611038/index.pdf.

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In some antenna applications, having high directivity while keeping the antenna dimensions small is desired, which can be obtained by use of superdirective arrays. Superdirective arrays have been popular in academic world since a superdirective array provides higher directivity than the uniformly excited antenna array of same length. In this thesis, superdirective arrays are investigated by making high precision numerical computations. Superdirective array element excitations, array factors and directivities are inspected for different number of elements. Superdirective array pattern and dire
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Nelakonda, Nikitha. "Design of Robust Superdirective Receiving Antenna Array for Circular, Hexagonal and Elliptical Geometries." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460984746.

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Touhami, Abdellah. "Optimisation multi-objectif d'antennes superdirectives compactes à balayage de faisceau pour des passerelles domestiques 5G sans fil." Electronic Thesis or Diss., Université de Rennes (2023-....), 2024. http://www.theses.fr/2024URENS002.

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L’évolution des standards de communication impose le besoin des architectures antennaires plus sophistiqués associés à des techniques de diversité d’antennes et de formation de faisceaux. Ce type d’antennes offre des nouvelles possibilités pour les applications sans fil en termes d’efficacité spectrale, de fiabilité des liens radio, de réduction de l’impact environnementale ainsi que l’accroissement des capacités des systèmes de communications. Cependant, les techniques conventionnelles de formation de faisceaux entraînent souvent une augmentation significative de la taille de l’antenne. Par c
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Diao, Junming. "High-Sensitivity Phased Arrays for Radio Astronomy and Satellite Communications." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6546.

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Radio astronomy is used to study stars, galaxies, black holes and gas clouds radiation at radio frequencies. Detecting extremely weak signals from deep space radio sources requires high sensitive feed system associated with large dish antennas. The key figure of merit is survey speed, or the time required to map a region of the sky to a given source flux density. Survey speed is proportional to the frequency bandwidth, the field of view or observable region of the sky, and the squared sensitivity, where sensitivity is related to reflector aperture efficiency and system noise temperature. Compa
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Moore, Darren C. "Speech enhancement using microphone arrays." Thesis, Queensland University of Technology, 2000. https://eprints.qut.edu.au/36141/1/36141_Moore_2000.pdf.

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This thesis presents a comparative analysis of baseline microphone array speech enhancement techniques that are prominent in current literature. Delay-sum beamforming, sub-array beamforming, near- and far-field superdirectivity, the generalised sidelobe canceller and the adaptive system for microphone-array noise reduction (AivINOR) are evaluated in varying noise conditions and for different array geometries. The effect of complementing each technique with a postfilter is also assessed. A novel beamformer, termed the near-field adaptive beamformer (NFAB), is introduced and then shown to prov
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Debard, Alexandre. "Analyse et optimisation d'antennes réseaux compactes superdirectives." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALT058.

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Cette thèse a pour objectif l’étude et la recherche d’amélioration de la technologie d’antenne réseau superdirective. Cette technologie a récemment été rééxaminée dans la littérature car elle peut apporter des fonctionnalités intéressantes pour les applications de télécommunication futures. L’examen de ce type d’antenne est donc conduit à travers l’outil de la décomposition en ondes sphériques qui permet l’étude générale des limites de directivité ou de gain, en considérant des pertes d’énergie dans l’antenne. La théorie classique des antennes réseau end-fire est aussi revue, dans le cas de ré
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Wakasa, Masahiro. "Lower bounds on the Q-factor for small oversampled superdirective arrays over a ground plane." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188960.

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Base station antennas for next generation mobile communication networks will be required to have a wide bandwidth for compatibility and support multi-beam applications. Antenna arrays are one possible candidate for a next generation base station antenna since they can obtain high directivity, support multi-beam and wide angle scanning. However, a wide-band antenna array faces several problems at the low frequency limit. The electrical size of the antenna array becomes smaller at the low frequency and it becomes harder to obtain high directivity. Another issue is that the bandwidth becomes narr
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Tumolo, Roberto Michele. "Design, analysis, application and experimental assessment of algorithms for the synthesis of maximally sparse, planar, non-superdirective and steerable arrays." Doctoral thesis, Università degli studi di Trento, 2018. https://hdl.handle.net/11572/367635.

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This thesis deals with the problem of synthesizing planar, maximally sparse, steerable and non-superdirective array antennas by means of convex optimization algorithms and testing their performances on an existing array to assess its far field performances in terms of requirements ful- filment. The reason behind the choice of such topic is related to those applications wherein the power supply/consumption, the weight and the hardware/software complexity of the whole radiating system have a strong impact on the overall cost. On the other hand, the reduction of the number of elements has of cour
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Tumolo, Roberto Michele. "Design, analysis, application and experimental assessment of algorithms for the synthesis of maximally sparse, planar, non-superdirective and steerable arrays." Doctoral thesis, University of Trento, 2018. http://eprints-phd.biblio.unitn.it/3438/2/Disclaimer_Tumiolo.pdf.

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This thesis deals with the problem of synthesizing planar, maximally sparse, steerable and non-superdirective array antennas by means of convex optimization algorithms and testing their performances on an existing array to assess its far field performances in terms of requirements ful- filment. The reason behind the choice of such topic is related to those applications wherein the power supply/consumption, the weight and the hardware/software complexity of the whole radiating system have a strong impact on the overall cost. On the other hand, the reduction of the number of elements has of cou
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Wang, Chun-kai, and 王俊凱. "Superdirective microphone array with application in nearfield acoustical holography and supersensitive sound pickup." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/78727869214292849640.

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碩士<br>國立交通大學<br>機械工程學系<br>99<br>There are two topics in this thesis: one is supersensitive sound pickup and the other is super directive microphone array with application in nearfield acoustic holography. The former contains horn and curved array, and we will discuss the theory, design method and the result. Final, the device is applied to the application in a distant recording. Conventional nearfield acoustical holography (NAH) is generally based on the free-field assumption, which can cause errors when interfering sources are present in practical environment. Although the measurement of
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Books on the topic "Superdirective array"

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Active Impedance Matching for Superdirective, Super-Gain HTS Antenna Arrays. Storming Media, 1996.

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Book chapters on the topic "Superdirective array"

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Khouma, Mamadou Mansour, Ibra Dioum, Idy Diop, Lamine Sane, Kadidiatou Diallo, and Samuel Ouya. "A Superdirective and Reconfigurable Array Antennas for Internet of Vehicles (IoV)." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16042-5_1.

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Bitzer, Joerg, and K. Uwe Simmer. "Superdirective Microphone Arrays." In Digital Signal Processing. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04619-7_2.

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Benesty, Jacob, Jingdong Chen, and Israel Cohen. "Superdirective Beamforming with Circular Arrays." In Springer Topics in Signal Processing. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14842-7_6.

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Conference papers on the topic "Superdirective array"

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Touhami, A., S. Collardey, and A. Sharaiha. "Compact superdirective array with beamforming capability." In 2024 International Symposium on Antennas and Propagation (ISAP). IEEE, 2024. https://doi.org/10.1109/isap62502.2024.10846343.

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Touhami, Abdellah, Sylvain Collaredy, and Ala Sharaiha. "Compact Superdirective Electronically-Beam-Switchable Antenna Array for 5G Indoor Gateway." In 2025 19th European Conference on Antennas and Propagation (EuCAP). IEEE, 2025. https://doi.org/10.23919/eucap63536.2025.10999383.

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Kaifas, Theodoros N. F. "Electromagnetic Power Harvesting by Electrically Small, Resonant, Parasitic, Superdirective Arrays Designed via Characteristic Mode Theory." In 2024 5th International Conference on Communications, Information, Electronic and Energy Systems (CIEES). IEEE, 2024. https://doi.org/10.1109/ciees62939.2024.10811323.

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YuKang Liu. "Phase modes circular array superdirective beamforming." In OCEANS 2012. IEEE, 2012. http://dx.doi.org/10.1109/oceans.2012.6405024.

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Gupta, Monish, and Jyoti Saxena. "Superdirective patch antenna array using metamaterial." In 2014 IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT). IEEE, 2014. http://dx.doi.org/10.1109/conecct.2014.6740320.

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Haskou, Abdullah, Sylvain Collardey, and Ala Sharaiha. "Small array design using parasitic superdirective antennas." In 2016 10th European Conference on Antennas and Propagation (EuCAP). IEEE, 2016. http://dx.doi.org/10.1109/eucap.2016.7481848.

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Haskou, Abdullah, Sylvain Collardey, and Ala Sharaiha. "Small 3D array design using superdirective antennas." In 2015 Loughborough Antennas & Propagation Conference (LAPC). IEEE, 2015. http://dx.doi.org/10.1109/lapc.2015.7366122.

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Dakhli, Saber, Hatem Rmili, Jean-Marie Floc'h, Fethi Choubani, and Muntasir Sheikh. "Design of superdirective and compact antenna array." In 2016 5th International Conference on Multimedia Computing and Systems (ICMCS). IEEE, 2016. http://dx.doi.org/10.1109/icmcs.2016.7905543.

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Debard, Alexandre, Antonio Clemente, Christophe Delaveaud, Christopher Djoma, Patrick Potier, and Philippe Pouliguen. "Analytical evaluation of superdirective array sensitivity factor." In 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2017. http://dx.doi.org/10.1109/apusncursinrsm.2017.8072223.

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Mazinani, S. Maryam, and Hamid Reza Hassani. "Two element wideband Planar plate Monopole superdirective array." In 2010 18th Iranian Conference on Electrical Engineering (ICEE). IEEE, 2010. http://dx.doi.org/10.1109/iraniancee.2010.5507521.

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Reports on the topic "Superdirective array"

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White, D. J., D. R. Bowling, and P. L. Overfelt. Active Impedance Matching for Superdirective, Super-Gain HTS Antenna Arrays. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada306546.

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